“华光礁一号”南宋沉船船板中硫铁化合物分析

鉴于硫铁化合物对海洋出水木质文物的特殊危害,通过 X射线衍射(XRD)、等离子体发射光谱(ICP-AES)和 X射线光电子能谱(XPS)等分析手段,对“华光礁一号”南宋沉船船板残块中的硫铁化合物进行了分析研究。结果表明,所采集的样品中含有大量的 Fe和 S元素,并且其分布深度至少可达 4cm。两种元素的化学状态基本可分为铁的氧化物、硫铁化合物、硫酸盐和其它还原性硫四大类。其中,硫铁化合物主要以 FeS和 FeS₂形式存在,并已部分氧化成硫酸盐。因此,在后续的保护处理过程需着重对其酸化过程进行控制,以有利于文物的长期保存。

Analysis of the iron sulfides in the shipwrecks Huaguang Reef Iof the Southern Song Dynasty

In view of their particular damage to the marine archaeological wood, the iron sulfides in the shipwrecks Huaguang Reef I of the Southern Song Dynasty were analyzed by X-ray diffraction (XRD), Inductively coupled plasma-Atomic emission spectrometry (ICP-AES), and X-ray photoelectron spectroscopy (XPS). The results showed that the samples contained a lot of Fe and S, which distributed throughout all the wood and even in the 4cm depth. And the two elements exist as oxidized iron, iron sulfides, sulfates, or other reduced sulfur. It was also showed that the main forms of iron sulfides were FeS and FeS₂, and part of iron sulfides had been oxidized to sulfates. Thus, much more attention sould been paid on the control of iron sulfides in the subsequent conservation process to prolong the time of heritage preservation.